Test #1 Review

Topic 1

100

All fractions and decimals that end (0.5) or have a repeated pattern (2.333333...) are considered ________________ numbers

Rational

200

What is the one number that whole numbers has that natural numbers does not have?

0

300

Are irrational numbers always/sometimes/never rational numbers?

Never

400

Name all sets of numbers to which each number belongs:

6/3

Natural, Whole Number, Integer, Rational Number and Real

500

Name all sets of numbers to which each number belongs:

2.131131113...

Real & Irrational

Topic 2

100

The distance from zero on a number line is called ________________

Absolute Value

200

Simplifying an expression using a specific order:

_ _ _ _ _ _

PEMDAS

300

|9| + |-8| = ?

9 + 8 = 17

400

2³ - 5 x (6 + 4) / 2

-17

500

(3 - 13)² + 14 / 4² - 5 x 2

19

Topic 3

100

Linear equations are frequently written in slope-intercept form:

y = mx + b

200

Equations written in standard form can be converted to slope-intercept form by solving for which variable?

y -> y=mx+b

300

Given the slope and y-intercept of the line, write the equation in slope-intercept form:

slope: -3

y-intercept: 2

y = -3x + 2

400

Write the equation below in slope-intercept form:

*simplify*

-6x + 4y = 20

y = 3/2x + 5

500

Write the equation below in slope-intercept form:

*simplify*

-2x - 4y = 36

y = -1/2x - 9

Topic 4

100

Elimination Method: a method for solving systems of equations by _______ or ________ to eliminate a variable 

adding, subtracting

200

No Common Coefficients? 

Multiply one or both equations by some number to create __________ or ____________ coefficients

matching, opposite

300

Solve each system by elimination:

x + 4y = 13

x - y = 3

(5,2)

400

Solve each system by elimination:

4x + 2y = 6

-2x + 2y = 18

(-2,7)

500

Solve each system by elimination:

3x + 3y = 9

5x + 4y = 10

(-2,5)